From muzikifan.com http://www.muzikifan.com/rockamambo.html

Orchestre Rock-a-Mambo was a studio band that included a rotating roster of performers from African Jazz, including Kabasele himself, Lucie Eyenga, Rossignol, Nino Malapet, Papa Noel, the young Wuta Mayi, and Lemy, as well as session men from OK Jazz and other great musicians in Leopoldville in 1956. Adou Elenga, one of the elders, and composer of "Maria Tebbo," returned from Angola to help set up the new band. This interchangeable pool of talent was associated with the Esengo label, which released its first half dozen discs in January 1957. Albums, EPs and singles were released on Pathé-Marconi & Columbia and are now very hard to find. Typical merengues and cha-chas were heard on the Hit Parade Africain series and the album AFRICAN MEMORIES. Rock-a-Mambo was the mother of Bantous de la Capitale, which also included a splinter group from OK Jazz, thereby uniting the two main styles of Congolese rumba across the river in Brazzaville.